The built-in lens "all-in-one" designed to be digital, which means it is specifically matched to the CCD. Cameras offering interchangeable lenses are designed for 35mm film, which usually does not have sufficient resolution for a Megapixel CCD sensor. When interchangeable lenses are removed from the body, the CCD and internal mechanisms are exposed to dust in the environment. Contaminants are a much bigger problem on digital cameras since the CCD is much smaller that a 35mm film plane.

One of the primary reasons for using interchangeable lenses is for a wide variety of focal lengths. The E-20N contains a 4x optical zoom 9mm-36mm (35mm-140mm equivalent in 35mm photography) built-in lens. In addition, there are wide angle, telephoto and macro add-on lenses. Some interchangeable lenses cost as much as the E-20 camera itself. Other lenses that were originally designed for film cameras do not deliver same focal length on a film camera as a digital camera. For example, a wide-angle 28mm lens attached to a digital camera would only provide 56mm equivalence.

This system offers great flexibility and will suit approximately 95% of most shooting needs.

The Interlace Scan (IS) mode the camera uses a mechanical shutter with shutter speeds up to 1/640th second. It also uses the maximum resolution that is possible with the CCD (5.0 MP). In the Progressive Scan (PS) mode the camera operates with the electronic shutter with shutter speeds up to 1/4000th second and a 1/18000 second shutter speed (1/18000 in Shutter or Manual Priority modes only). In this mode the resolution is reduced in half (2.5 MP).

In the RAW mode, the image is compiled of raw data with no compression and no enhancing settings from the camera such as sharpness, contrast etc. It provides a higher dynamic range with the maximum image quality without being processed, so the user can apply his/her own changes to the file. The file will have a .ORF (Olympus Raw File) extension. It can be read using a supplied PhotoShop Plug-in or the Olympus Camedia 2.5 program.

Yes, the Olympus E-20N has a 62mm filter thread size. You can attach a standard 62mm lens filter directly on the lens. Color filters would not have an effect on the camera due to the auto white balance.

You can use two LB-01E 3V lithium batteries, four B-01 4PE AA Ni-MH batteries (BU-40SU charger and batteries), four AA Ni-CD batteries, four AA Alkaline batteries the B-10LPB Lithium Polymer Battery or the New B-12LPB Lithium Polymer Battery . Please note: the B-10LPB Lithium Polymer Battery, B-HLD10 Power Battery Holder and the B-20LPCE charger are included in the B-30 LBS kit, and the B-12LPB Lithium Polymer Battery, B-HLD10 Power Battery Holder and the B-20LPCE charger are included in the B-32 LBS kit.

The Lithium batteries that are provided with the camera will supply approximately 200 images. The Ni-MH batteries will provide approximate 100 shots per charge. The B-10LPB Lithium Polymer battery will allow 500 - 700 shots per charge and can be recharged approximately 500 times. B-12LPB Lithium Polymer Battery will deliver twice the power allowing 1000- 1400 shots per charge and can be recharged approximately 500 times. The Alkaline batteries, although can be used, is not recommended due to very low battery life.

The built-in flash cannot be used with the WCON-08B. The WCON-08B blocks the path of light from the built-in flash. An external flash should be used, for example, the FL-40 sits much higher, therefore the path of light is not blocked by the extension lens.

TIFF will always show up on the monitor when you scroll to it. If you adjust the Image Quality on the monitor, it will remember your setting even if it shows TIFF when you scroll back to it at another time.

You will need to purchase a sync cord that will separate apart (usually at the middle) with a standard two-prong connector. Just simply disconnect the sync cord, turn it 180 ° and plug it in. (These cords can be purchased at www.paramountcords.com)

You cannot use the E-10/20N in Program Mode with studio strobes. Studio strobes are not compatible with TTL (Through The Lens) metering. You will need to set the Mode Dial to Manual Mode. Exposure is determined by flash output , ISO and the distance from flash to subject. Proper exposure can be determined with a flash meter.

All auto-focus systems need a fair amount of light or contrast to work efficiently. If possible, raise the ambient light if indoors. Search for an area within the desired focusing point with contrast to focus on.

The E-10/20N battery holders are designed to fit the longer type CRV-3 lithium batteries and conventional sized AA NiMH batteries. Once installed into the battery compartment the AA sized batteries will make an electrical contact with the camera.